Official NHA Assessment

Race 4: OPEN A tabGOLD ACCOUNT - 0313141874 MR 86 HANDICAP (Open)

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Line Horse
Full Blast
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
7 / 10
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    The Tinkerman        3    56.5    1    0.00     2.0   81    80           81    +0
2    Passage Of Power     6    56.5    2    0.15     0.0   81    84           84    +3
3    Antigonus            6    53.5    3    0.75     0.0   81    78           78    -3
4    Full Blast           4    60.5    4    1.15     2.5   87    87           87    +0
5    Captain Who          4    57.5    5    1.95     2.5   81    81           81    +0
6    Big Sky Country      4    52.0    6    2.70     2.5   66    70           70    +4
7    Sikhulu              3    60.0    7    3.30     2.0   88    87           87    -1
8    Bristolbeaufighter   3    54.0    8    8.90     2.0   76    75           75    -1
99   Happy Wanderer       5    52.0    99   0.00     0.0   -     75           75    +0
99   Gardenia             5    56.0    99   0.00     0.0   -     83           83    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 The Tinkerman 81 76 81 -5 2.0 -
2 Passage Of Power 81 76 84 -8 0.0 -
3 Antigonus 81 81 78 +3 0.0 -
4 Full Blast Line 87 86 87 -1 2.5
5 Captain Who 81 65 81 -16 2.5 -
6 Big Sky Country 66 51 70 -19 2.5 -
7 Sikhulu 88 94 87 +7 2.0 -
8 Bristolbeaufighter 76 64 75 -11 2.0 -
99 Happy Wanderer - 55 75 -20 0.0 -
99 Gardenia - 75 83 -8 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points